oph_affine¶

Description¶

Behaviour

Apply an affine transformation to each element of the measure array: each item is multiplied by a scalar value and, then, the result is summed to a translation value.

Parameters

input measure type: Ophidia typing. Supported types are: ‘oph_double’; ‘oph_float’; ‘oph_long’; ‘oph_int’; ‘oph_short’; ‘oph_byte’.
output measure type: Ophidia typing. Supported types are: ‘oph_double’; ‘oph_float’; ‘oph_long’; ‘oph_int’; ‘oph_short’; ‘oph_byte’.
measure: input measure.
scalar value: number to be multiplied by each element of the input measure. Default is 1.
translation value: number to be summed to output measure after the multiplication. Default is 0.
missingvalue : value to be considered as missing value; by default it is NAN (for ‘oph_double’ and ‘oph_float’).

Return type

Binary-array.

Examples

Multiply each element of the input array by 2 and sum 10 to the results.

oph_affine('OPH_DOUBLE','OPH_DOUBLE',measure,2,10)

Operation type

Simple.

Arguments¶

Argument name	Type	Mandatory	Values	Default	Min/Max-times
input measure type	“oph_type”	“yes”	“‘oph_double’\|’oph_float’ \|’oph_int’\|’oph_long’\|’oph_short’\|’oph_byte’”		“1” / “1”
output measure type	“oph_type”	“yes”	“‘oph_double’\|’oph_float’ \|’oph_int’\|’oph_long’\|’oph_short’\|’oph_byte’”		“1” / “1”
measure	“binary-array”	“yes”			“1” / “1”
scalar value	“double”	“no”		“1”	“0” / “1”
translation value	“double”	“no”		“0”	“0” / “1”
missingvalue	“double”	“no”		“NAN”	“0” / “1”